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Stella [2.4K]
3 years ago
13

An unknown solution has a pH of 7. How would you classify this solution?

Chemistry
1 answer:
xenn [34]3 years ago
7 0
Solution with a ph of 7 Is neutral
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How many 3d electrons are in an atom of each element? fe?
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The atomic number of iron, Fe, is 26. This means it has 26 electrons.

Now, as we write the configuration, we come up to electronic subshell 3p, which is completely filled. So the configuration up till this point is identical to Argon, so we may write:

[Ar], 3d, 4s

After the electrons in the Ar configuration are accommodated, there are 8 electrons left for the 3d and 4s shells. The 4s subshell, when empty, is at a lower level than the 3d level, so it fills first. Two electrons are placed here. Therefore, 3d has 6 electrons in Fe.
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Sam and Joe are trying to determine whether their ideas are scientific or pseudoscientific. Sam's idea is not rejected when expe
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See the complete question and the answer below

Explanation:

Sam and joe are trying to determine whether their ideas are scientific or pseudoscientific. sam's idea is not rejected when experiments produce different results. joe's idea gives the same result when tested repeatedly.  which statement is correct about sam and joe's idea?

<em>both ideas could be scientific. </em>

<em>neither idea could be scientific. </em>

<em>only sam's idea could be scientific. </em>

<em>only joe's idea could be scientific.</em>

<em />

The correct answer here would be that both ideas could scientific.

Scientific ideas are those that hold true or not rejected after being tested by different experiments. Pseudoscientific ideas cannot hold true after being tested by experiments.

If an idea is tested by repeated experiments and the experiments produce different results, the idea might remain unrejected if there are no overwhelming evidence to do so from the experiments. That an idea remains unrejected due to inadequate experimental evidence, however, does not mean it is scientific or unscientific.

In the same vein, that a repeatedly tested idea gives the same results does not mean that the idea is scientific unless the results say so. If results repeatedly go against the idea, it means such an idea is unscientific or pseudoscientific.

<em>Hence, both Joe and Sam's idea could be scientific, provided further experimental investigations are carried out.</em>

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